Finding the Third Proportional to 65,828 and 99,315

Step by Step Solution

1. Step 1: Write the proportion equation
   65,828 : 99,315 = 99,315 : x
2. Step 2: Convert to fraction form
   65,828/99,315 = 99,315/x
3. Step 3: Cross multiply
   65,828x = 99,315 × 99,315
4. Step 4: Simplify right side
   65,828x = 9,863,469,225
5. Step 5: Solve for x
   x = 9,863,469,225/65,828
6. Step 6: Final answer
   x = 149,836.99